Saw clamp



Patented Aug. 16, 1949 l i sirA'rzEs par Enr or Y agraria SAW CLM/IBYTheodore niger, New London, Iowa .armaron Mama :22, ma, sessi nate-.zie

(CL 7d-78).

,Z Claims.

This invention. isdirected--to a novel structure of saw clama Intheflliilg of saws.,. alsainithe setting thereof, withlmy invention thesaw is held by the novel clamp which I have produced,in a horizontalposition -with the teeth at the upper edge of the saw, where they arereadily ,accessible for the processing thereof, either filing or settingthe teeth, or both. It is an` object and. purpose ofi .the-presentinvention to provide a clamp in which the saw blade -may be held withthe teeth at theA upper f edge thereof-5 and which clamp is provided"with means for detachable connection t a .supportingbench or ,tableY andis quickly and easily operated Yfor release ci a saw held thereby, or toclamp the saw againstmovement, The structure which 1 have devised-ispractical and` economical to make, and is ci a sturdy, durablecharacter.

' An understanding of the vin'veiition may had from the followingdescription, taken in connection with the accompanying drawing, -in

which, Y

Fig. 1 is a plan view of the clamp, showing the same attached at theedge of a top of a bench or table,

Fig. 2 is an elevation thereof,

Fig. 3 is an end view of the clamp, a fragmentary portion of the tablebeing shown in vertical section, and a part of the clamp setting andreleasing means removed from the lower end thereof,

Fig. l is a fragmentary enlarged elevation of the structure at the lowerend of one of the clamping units, two of which are used, illustratingthe manually operable means for setting and releasing the clamp, and

Fig. 5 is an under plan View thereof.

Like reference characters refer to like parts in the different gures ofthe drawing.

In the structure of the clamp two manually operable clamp setting andreleasing units are provided, which are spaced apart from each other.Each includes a vertical bar I which at its upper end terminates in ahorizontal section 2 located at right angles to the lengthof the bar I,and at its lower end in a shorter horizontal section 3 located at rightangles to the length of the bar I but extending opposite to the upperhorizontal section 2. The horizontal section 3 at its free end is cutaway at both sides to provide a, centrally disposed tongue 3a, bestshown in Fig. 5. At the rear side of the bar I` an angle bracket 4 issecured which has a horizontal leg spaced from and parallel to thedescribed sec- .2 n tion. .The .section 2 carriesa handler-.operated Cammembers, whereby the edge, of a top 6fm bnclttableor the is insertablebetween the` hoizzontal oi the. brackets and the section 2."Moving thecam clamping handles 5 in thev proper direction willserve .tosecnrelyconnect/the two spaced. apart. units .at the edge `of, 'theV top. 5 asShown in. Fis. 3,..A An elongated .horizontal clamping jaw "l is securedatthe front side of the vertical bars I near their upper end and extendsbetween' them av position to be substantially opposite'the edgegof thevtop t.

With each of the inner or rear `bars I',l an cuter vertical bar 8;parallel thereto is associated'. Between the-two bars 8- of the twospaced units', described, a secondi clamping bar 9 is located and'secured' at the same level as the cl'rimliingQ jaw i1 The length of 'thetwo bars l andY 9, whicl provide Ythe clampingv jaws, may be varied' fordifferent sizes of the saw vclaniloing structures applicable to saws; ofdifferentV lengths. The loW- Ver* endX ofeach bar -llV is notchedcentrally to provide two lingers 8a spaced from each other a distancesuch that the tongue 3a of the section 'l extends between them. The bars8 are connected to the inner bars I between their ends by bolts, such asindicated at IIJ, so that such bars 8 may have a limited rockingmovement about fulcrums provided by the bolts, whereby the outerclamping jaw 9 may be moved toward or away from the inner jaw 'I for thesecure clamping or release of a saw, indicated in dash lines at II,positioned between them; and as indicated, with the saw teeth at theupper edge of the saw.

At the lower ends of the pairs of bars I and 8, and at each sidethereof, plates I2 of a generally quadrant form are permanently securedto said bars I at each side thereof. Between the two plates I2 on eachof said units, a flat block I3 is located and is pivotally mounted atits inner end on a rod or shaft I4, extending between the plates I2 asshown. The pivotal rod I4 is at the inner end of the block. Said blockmay be turned through an are of substantially ninety degrees from thehorizontal position shown in Fig. 3, to a vertical position. In thehorizontal position its forward or outer edge bears against the innerside of its associated bar 8 near the lower end thereof, moving thelower end of the bar 8 below the bolt I0 outwardly and the upper endinwardly. When the block I3 is released and moved to a verticalposition, its bar 8 is released with a simultaneous release of theclamping jaw 9 so that the saw I I may be removed.

Each of the pivotal rods I4 at one end is equipped with a handle I5 formanual operation and for turning the actuating blocks I3 between thepositions described. Preferably the side plate I2 adjacent the handle I5is provided with an arcuate slot I6 and a connecting rod from the handleI5 extends through said slot and is permanently secured to the block I3for securing a more certain and perfect movement of the actuating blockI3.

It is evident with the structure described that a saw may be clampedbetween the relatively long clamping jaw bars 'I and 9 and held whilethe teeth are being led or set; and that upon finishing the filing orsetting, the saw may be released and removed. The structure may befolded to a small compass, as indicated in dash lines in Fig. 2, uponits removal from the bench or table top 6, by swinging the bars I and 8which depend below the jaw bars I and 9 to the position indicated inFig. 2.

The structure described is of a novel but simple character, readilymanufactured with economy, and serves the purposes for which it has beenproduced in an exceptionally satisfactory manner.

The invention is defined in the appended claims and is to be consideredcomprehensive of all forms of structure coming within their scope.

' Iclaim:

1. In a structure as described, two spaced units adapted to bepositioned vertically, each of said units comprising, an inner verticalbar having a horizontal outwardly extending section at its lower end, anouter vertical bar mounted at its lower end upon said lower extension ofthe first bar and extending upwardly therefrom, horizontal clamping jawsextending between the inner and the outer bars of each unit andconnected thereto adjacent their upper ends, a fulcrum connectionbetween the bars of each unit a distance above their lower ends,manually operable means for forcing the lower ends of said outer barsoutwardly to move said clamping jaw carried on the outer bars inwardlytoward the other clamping jaw, said horizontal section at the lower endof the first vertical bar having a reduced width at its free end portionand said-outer vertical bar having a recess at its lower end into whichsaid reduced end portion is received, and said means for VAmovingsaid-outer Vertical bars about their fulcrum connections comprising, aside plate adjacent the lower end of each vertical bar, one at each sidethereof, a shaft extending through the plates of each unit, a handle forturning the shaft, and a block on the shaft between the plates swingablewith rocking movement of the shaftl to bear against the inner side ofthe lower end portion of its associated outer vertical bar, as

specified. 2. A structure as defined in claim 1, one of said side plateshaving an arcuate slot therein, and a rod connected with the adjacentblock toward its outer edge received and movable in said slot.

' THEODORE ALGER.

` REFERENCES CITED `The following references are of record in the Iileof this patent:

UNITED STATES PATENTS

